////////////////////////////////////////////////////////////////////////////////
// checkstyle: Checks Java source code for adherence to a set of rules.
// Copyright (C) 2001-2010  Oliver Burn
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
////////////////////////////////////////////////////////////////////////////////
package com.puppycrawl.tools.checkstyle.checks;

import com.puppycrawl.tools.checkstyle.BaseCheckTestSupport;
import com.puppycrawl.tools.checkstyle.DefaultConfiguration;
import org.junit.Test;

public class RegexpCheckTest extends BaseCheckTestSupport
{
    @Test
    public void testRequiredPass() throws Exception
    {
        final String required = "Test case file";
        final DefaultConfiguration checkConfig =
            createCheckConfig(RegexpCheck.class);
        checkConfig.addAttribute("format", required);
        final String[] expected = {
        };
        verify(checkConfig, getPath("InputSemantic.java"), expected);
    }

    @Test
    public void testRequiredFail() throws Exception
    {
        final String required = "This text is not in the file";
        final DefaultConfiguration checkConfig =
            createCheckConfig(RegexpCheck.class);
        checkConfig.addAttribute("format", required);
        final String[] expected = {
            "0: Required pattern '" + required + "' missing in file.",
        };
        verify(checkConfig, getPath("InputSemantic.java"), expected);
    }

    @Test
    public void testRequiredNoDuplicatesPass() throws Exception
    {
        final String required = "Test case file";
        final DefaultConfiguration checkConfig =
            createCheckConfig(RegexpCheck.class);
        checkConfig.addAttribute("format", required);
        checkConfig.addAttribute("duplicateLimit", "0");
        final String[] expected = {
        };
        verify(checkConfig, getPath("InputSemantic.java"), expected);
    }

    @Test
    public void testRequiredNoDuplicatesFail() throws Exception
    {
        final String required = "Boolean x = new Boolean";
        final DefaultConfiguration checkConfig =
            createCheckConfig(RegexpCheck.class);
        checkConfig.addAttribute("format", required);
        checkConfig.addAttribute("duplicateLimit", "0");
        final String[] expected = {
            "24: Found duplicate pattern '" + required + "'.",
        };
        verify(checkConfig, getPath("InputSemantic.java"), expected);
    }

    @Test
    public void testIllegalPass() throws Exception
    {
        final String illegal = "This text is not in the file";
        final DefaultConfiguration checkConfig =
            createCheckConfig(RegexpCheck.class);
        checkConfig.addAttribute("format", illegal);
        checkConfig.addAttribute("illegalPattern", "true");
        final String[] expected = {
        };
        verify(checkConfig, getPath("InputSemantic.java"), expected);
    }

    @Test
    public void testIllegalFailBelowErrorLimit() throws Exception
    {
        final String illegal = "^import";
        final DefaultConfiguration checkConfig =
            createCheckConfig(RegexpCheck.class);
        checkConfig.addAttribute("format", illegal);
        checkConfig.addAttribute("illegalPattern", "true");
        checkConfig.addAttribute("errorLimit", "4");
        final String[] expected = {
            "7: Line matches the illegal pattern '" + illegal + "'.",
            "8: Line matches the illegal pattern '" + illegal + "'.",
            "9: Line matches the illegal pattern '" + illegal + "'.",
        };
        verify(checkConfig, getPath("InputSemantic.java"), expected);
    }

    @Test
    public void testIllegalFailAboveErrorLimit() throws Exception
    {
        final String illegal = "^import";
        final String error = "The error limit has been exceeded, "
            + "the check is aborting, there may be more unreported errors.";
        final DefaultConfiguration checkConfig =
            createCheckConfig(RegexpCheck.class);
        checkConfig.addAttribute("format", illegal);
        checkConfig.addAttribute("illegalPattern", "true");
        checkConfig.addAttribute("errorLimit", "3");
        final String[] expected = {
            "7: Line matches the illegal pattern '" + illegal + "'.",
            "8: Line matches the illegal pattern '" + illegal + "'.",
            "9: Line matches the illegal pattern '" + error + illegal + "'.",
        };
        verify(checkConfig, getPath("InputSemantic.java"), expected);
    }

    @Test
    public void testMessagePropertyGood()
        throws Exception
    {
        final String illegal = "System\\.(out)|(err)\\.print(ln)?\\(";
        final String message = "Bad line :(";
        final DefaultConfiguration checkConfig =
            createCheckConfig(RegexpCheck.class);
        checkConfig.addAttribute("format", illegal);
        checkConfig.addAttribute("illegalPattern", "true");
        checkConfig.addAttribute("message", message);
        final String[] expected = {
            "69: Line matches the illegal pattern '" + message + "'.",
        };
        verify(checkConfig, getPath("InputSemantic.java"), expected);
    }

    @Test
    public void testMessagePropertyBad()
        throws Exception
    {
        final String illegal = "System\\.(out)|(err)\\.print(ln)?\\(";
        final DefaultConfiguration checkConfig =
            createCheckConfig(RegexpCheck.class);
        checkConfig.addAttribute("format", illegal);
        checkConfig.addAttribute("illegalPattern", "true");
        checkConfig.addAttribute("message", null);
        final String[] expected = {
            "69: Line matches the illegal pattern '" + illegal + "'.",
        };
        verify(checkConfig, getPath("InputSemantic.java"), expected);
    }

    @Test
    public void testIgnoreCaseTrue() throws Exception
    {
        final String illegal = "(?i)SYSTEM\\.(OUT)|(ERR)\\.PRINT(LN)?\\(";
        final DefaultConfiguration checkConfig =
            createCheckConfig(RegexpCheck.class);
        checkConfig.addAttribute("format", illegal);
        checkConfig.addAttribute("illegalPattern", "true");
        final String[] expected = {
            "69: Line matches the illegal pattern '" + illegal + "'.",
        };
        verify(checkConfig, getPath("InputSemantic.java"), expected);
    }

    @Test
    public void testIgnoreCaseFalse() throws Exception
    {
        final String illegalTrue = "(?i)SYSTEM\\.(OUT)|(ERR)\\.PRINT(LN)?\\(";
        final DefaultConfiguration checkConfigTrue =
            createCheckConfig(RegexpCheck.class);
        checkConfigTrue.addAttribute("format", illegalTrue);
        checkConfigTrue.addAttribute("illegalPattern", "true");
        final String[] expectedTrue = {
            "69: Line matches the illegal pattern '" + illegalTrue + "'.",
        };
        verify(checkConfigTrue, getPath("InputSemantic.java"), expectedTrue);

        final String illegalFalse = "SYSTEM\\.(OUT)|(ERR)\\.PRINT(LN)?\\(";
        final DefaultConfiguration checkConfigFalse =
            createCheckConfig(RegexpCheck.class);
        checkConfigFalse.addAttribute("format", illegalFalse);
        checkConfigFalse.addAttribute("illegalPattern", "true");
        final String[] expectedFalse = {};
        verify(checkConfigFalse, getPath("InputSemantic.java"), expectedFalse);
    }

    @Test
    public void testIgnoreCommentsCppStyle() throws Exception
    {
        // See if the comment is removed properly
        final String illegal = "don't use trailing comments";
        final DefaultConfiguration checkConfig =
            createCheckConfig(RegexpCheck.class);
        checkConfig.addAttribute("format", illegal);
        checkConfig.addAttribute("illegalPattern", "true");
        checkConfig.addAttribute("ignoreComments", "true");
        final String[] expected = {
        };
        verify(checkConfig, getPath("InputTrailingComment.java"), expected);
    }

    @Test
    public void testIgnoreCommentsFalseCppStyle() throws Exception
    {
        // See if the comment is removed properly
        final String illegal = "don't use trailing comments";
        final DefaultConfiguration checkConfig =
            createCheckConfig(RegexpCheck.class);
        checkConfig.addAttribute("format", illegal);
        checkConfig.addAttribute("illegalPattern", "true");
        checkConfig.addAttribute("ignoreComments", "false");
        final String[] expected = {
            "2: Line matches the illegal pattern '" + illegal + "'.",
        };
        verify(checkConfig, getPath("InputTrailingComment.java"), expected);
    }

    @Test
    public void testIgnoreCommentsCStyle() throws Exception
    {
        // See if the comment is removed properly
        final String illegal = "c-style 1";
        final DefaultConfiguration checkConfig =
            createCheckConfig(RegexpCheck.class);
        checkConfig.addAttribute("format", illegal);
        checkConfig.addAttribute("illegalPattern", "true");
        checkConfig.addAttribute("ignoreComments", "true");
        final String[] expected = {
        };
        verify(checkConfig, getPath("InputTrailingComment.java"), expected);
    }

    @Test
    public void testIgnoreCommentsFalseCStyle() throws Exception
    {
        final String illegal = "c-style 1";
        final DefaultConfiguration checkConfig =
            createCheckConfig(RegexpCheck.class);
        checkConfig.addAttribute("format", illegal);
        checkConfig.addAttribute("illegalPattern", "true");
        checkConfig.addAttribute("ignoreComments", "false");
        final String[] expected = {
            "17: Line matches the illegal pattern '" + illegal + "'.",
        };
        verify(checkConfig, getPath("InputTrailingComment.java"), expected);
    }

    @Test
    public void testIgnoreCommentsMultipleCStyle() throws Exception
    {
        // See if a second comment on the same line is removed properly
        final String illegal = "c-style 2";
        final DefaultConfiguration checkConfig =
            createCheckConfig(RegexpCheck.class);
        checkConfig.addAttribute("format", illegal);
        checkConfig.addAttribute("illegalPattern", "true");
        checkConfig.addAttribute("ignoreComments", "true");
        final String[] expected = {
        };
        verify(checkConfig, getPath("InputTrailingComment.java"), expected);
    }

    @Test
    public void testIgnoreCommentsMultiLine() throws Exception
    {
        final String illegal = "Let's check multi-line comments";
        final DefaultConfiguration checkConfig =
            createCheckConfig(RegexpCheck.class);
        checkConfig.addAttribute("format", illegal);
        checkConfig.addAttribute("illegalPattern", "true");
        checkConfig.addAttribute("ignoreComments", "true");
        final String[] expected = {
        };
        verify(checkConfig, getPath("InputTrailingComment.java"), expected);
    }

    @Test
    public void testIgnoreCommentsInlineStart() throws Exception
    {
        final String illegal = "long ms /";
        final DefaultConfiguration checkConfig =
            createCheckConfig(RegexpCheck.class);
        checkConfig.addAttribute("format", illegal);
        checkConfig.addAttribute("illegalPattern", "true");
        checkConfig.addAttribute("ignoreComments", "true");
        final String[] expected = {
        };
        verify(checkConfig, getPath("InputTrailingComment.java"), expected);
    }

    @Test
    public void testIgnoreCommentsInlineEnd() throws Exception
    {
        final String illegal = "int z";
        final DefaultConfiguration checkConfig =
            createCheckConfig(RegexpCheck.class);
        checkConfig.addAttribute("format", illegal);
        checkConfig.addAttribute("illegalPattern", "true");
        checkConfig.addAttribute("ignoreComments", "true");
        final String[] expected = {
            "20: Line matches the illegal pattern '" + illegal + "'.",
        };
        verify(checkConfig, getPath("InputTrailingComment.java"), expected);
    }

    @Test
    public void testIgnoreCommentsInlineMiddle() throws Exception
    {
        final String illegal = "int y";
        final DefaultConfiguration checkConfig =
            createCheckConfig(RegexpCheck.class);
        checkConfig.addAttribute("format", illegal);
        checkConfig.addAttribute("illegalPattern", "true");
        checkConfig.addAttribute("ignoreComments", "true");
        final String[] expected = {
            "21: Line matches the illegal pattern '" + illegal + "'.",
        };
        verify(checkConfig, getPath("InputTrailingComment.java"), expected);
    }

    @Test
    public void testIgnoreCommentsNoSpaces() throws Exception
    {
        // make sure the comment is not turned into spaces
        final String illegal = "long ms  ";
        final DefaultConfiguration checkConfig =
            createCheckConfig(RegexpCheck.class);
        checkConfig.addAttribute("format", illegal);
        checkConfig.addAttribute("illegalPattern", "true");
        checkConfig.addAttribute("ignoreComments", "true");
        final String[] expected = {
        };
        verify(checkConfig, getPath("InputTrailingComment.java"), expected);
    }
}
